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Colonoscopy

A colonoscopy is used to view the inside of your lower digestive tract (colon and rectum). The test is usually done in the hospital on an outpatient basis. During the exam, the doctor can remove a small tissue sample (a biopsy) for testing. Small growths, such as polyps, may also be removed during colonoscopy. It can help screen for colon cancer and can help find the source of abdominal pain, bleeding, and changes in bowel habits.

During the test

You are given sedating (relaxing) medication through an IV line. You may be drowsy.

The procedure takes 30 minutes or longer.

The doctor performs a digital rectal exam to check for anal and rectal problems. The rectum is lubricated and the scope inserted.

If you are awake, you may have a feeling similar to needing to have a bowel movement. You may also feel pressure as air is pumped into the colon. It’s OK to pass gas during the procedure.